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Optical Tube Assemblies

Optical tube assemblies, commonly abbreviated by astronomers as OTAs are simply the tube of the telescope where the optics are internally located. OTAs can be helpful in a situation in which an observer has a compatible mount and doesn't want to buy a whole new telescope with a mount included. Optical Tube Assemblies can come in the form of Maksutov-Cassegrain, Astrographs, Reflectors, Refractors, Schmidt-Cassegrains and many others! With the right mounting connections and range of mount and tripod payload, OTAs are a great choice for changing optical type without changing the mount.

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  1. Vixen - 103mm AX103S (f/8) Apochromatic Refractor Optical Tube Assembly

    Vixen - 103mm AX103S (f/8) Apochromatic Refractor Optical Tube Assembly

    The built in Dual Speed Focuser enables coarse and fine focus adjustments. Sky at Night Magazine states: "With its excellent build quality and rich feature set, we thoroughly recommend this system if you’re looking to upgrade from your current setup".

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    (48 States)
    Model#: 5867
    $3,199.00

    Out of stock

  2.  PrimaLuceLab AIRY 104mm Triplet Apochromatic Refractor

    PrimaLuceLab - AIRY 104mm Triplet Apochromatic Refractor

    PrimaLuceLab is glad to present the first OTA of the new T-series which is designed for the customer thriving for excellent optical performances with good mechanical quality with no compromises!

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    (48 States)
    Model#: AIRYAPO104T
    $3,299.00

  3. Sky-Watcher USA Esprit 120mm ED Triplet APO Refractor

    Sky-Watcher USA - Esprit 120mm ED Triplet APO Refractor

    Designed wtih the discerning astrophotographer in mind, Sky-Watcher USA’s top-of-the-line Esprit refractors deliver the kind of imaging performance one would expect from telescopes costing thousands of dollars more.

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    (48 States)
    Model#: S11420
    $3,199.00

  4. Meade - 12" ACF Advanced Coma-Free (f/8) Optical Tube Assembly - (UHTC)

    Meade - 12" ACF Advanced Coma-Free (f/8) Optical Tube Assembly - (UHTC)

    The Meade Instruments 12" f/8 ACF Optical Tube Assembly (OTA) features a 12” aperture, f/8 optical system with Meade’s Advanced Coma Free (ACF) optics and high-contrast baffling that ensures crisp, pinpoint imaging to the very edge of the field.

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    (48 States)
    Model#: MEA-1208-80-01
    $3,299.00

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